how can i find the highest temperature of a reaction. it is an enthalpy of reaction lab with Mg and HCl

Question

and then how do i find the maximum temperature (deltaT). 

Answer 1

Generally, the heat of reaction is given in various books and tables. If given, it will be based on 1 mole Mg reacting with 2 moles of HCl. You will have to make the necessary adjustments for the mole you use. Once you have that, you can use q = mCdeltaT and solve for delta T to get the change in temp.